Sasuke could be a candidate. Given their complex relationship, Sasuke might find a way to give Naruto a new arm as a way to atone for their past differences. He could have discovered some rare medical ninjutsu during his travels or come across a powerful artifact that he uses to create a new arm for Naruto.
The reason why Shiroishi's arm was bandaged was because in " The Prince of Tennis," Shiroishi's tennis coach, Osamu Watanabe, had custom-made a pair of golden wrist guards for him during his teenage years. He had asked Shiroishi to wear them until he graduated from junior high school and not let anyone find out. This was to control Kintaro, because Kintaro had an abnormal power. Ordinary threats were ineffective against him. Beneath Bai Shi's bandages was a pure gold arm guard, which allowed him to show off his wealth. Thus, the bandage on Shiroishi's arm was to control Kintaro and display his golden armguard.
Tushan Susu was a character in the Chinese manga " Little Fox Demon Matchmaker " and its derivative works. She was a young girl who had lost her demonic power and memory. In the manga, Tushan Susu had never arm-wrestled with anyone.
Therefore, Tushan Susu did not arm wrestle.
While waiting for the TV series, you can also click on the link below to read the original work of " Little Fox Demon Matchmaker " to understand the plot in advance!
The Mechanical Priest's Mechanical Arm was an item from the novel Lord of the Mysteries. It was the Beyonder power of the main character, Klein Moretti.
The mechanical arm was made of steel and leather and could perform all kinds of complicated actions, such as holding weapons and operating machinery. It was obtained by Klein during a mysterious incident. It originally belonged to a believer of the ancient God of Machinery. The core of the mechanical arm was a mysterious rune that could provide powerful strength and magic power.
Klein could control the mechanical arm through his thoughts, allowing it to carry out various missions. He could change the mechanical arm into various shapes, such as claws, hammers, whips, etc., to adapt to different combat needs. The mechanical arm could also fuse with Klein's body, increasing his strength and speed.
In short, the Mechanical Priest's mechanical arm was a very powerful weapon that provided Klein with great help in battle.
Hurry up and click on the link below to return to the super classic " Lord of the Mysteries "!
Maybe Orochimaru. Despite being a villain in the past, he is a master of forbidden jutsus and experiments. He could see Naruto as an interesting subject and give him a new arm with some dark powers, which Naruto would then have to learn to control for the greater good.